I am no expert, but I suggest you go with your first instinct--'not a good idea'. I actually find this quite appauling. Bleach is poisonous! Poisons entering the lungs from breathing the fumes and being absorbed through the skin. Like your liver doesn't already have enough work to do trying to clean up all the metal toxins, now it is dealing with the chlorine toxins too. Absolutely absurd advise I would say.
Please, please, PLEASE do not do that again. There are much better natural ways to detox--lots of info here at curezone. Cilantro & oranges (lots of oranges-organic if possible) would be sooooo much better.
Don't take my advise, your naturopath's advice, or anyone's advice soley, do a little research & then follow your own advice.